Substation telephone set.



R. HANSEN.

SUBSTATION TELEPHONE SET.

APPLICATION 111.21) 132.0. 9,1907.

91 6,552. Patented Mar. 30, 1909.

2 SHEETS-SHEET 1.

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R. HANSEN.

SUBSTATION TELEPHONE SET.

APPLICATION rmxn DEU.9,1907.

91 6,552. Patented Mar. 30, 1909.

2 SHEETS-SHEET H.

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UNITED s'ra'rns PATENT FFlQE.

RASMUS HANSEN, OI SIOUX CITY, IOWA, ASSIGNOR OF ONE-HALF TO INTERSTATE SUPPLY COMPANY, OF SIOUX CITY, IOWA, A CORPORATION OF IOWA.

, SUBSTA'IION TELEPHONE SET.

Specification of Letters Patent.

Patented March 30, 1909.

Application filed December 9, 1907. Serial No. 405,641.

T 0 all whom it may concern:

Be it known that I, RASMUS I'IANSEN, a subject of the King of Denmark, and resident of Sioux City, county ol Woodbury, and State of Iowa, have invented a new and use 'lul Improvement in Substation Telephone Sets, of which the following is specification.

Y My invention pertains to equipments for telephone substations and has as its object the production ol a wall set having tho lollowing advantages: minimum size ol case for the apparatus to be mounted; writing sheli' ol maximum size; location o'l' writing shell convenient lor the hand ol' a person using the transmitter; accessibility ol' parts of apparatus when the door of the case is open; a transmitter circuit contained wnolly within the body of the cabinet and not involving flexible conductors attached to the door of the cabinet. I secure these advantages by the use ol cabinet box substantially parallelepipcdonal, the front ol which is closed by a swinging door; within the open box body I mount all apparatus except the ringer. The door to the box is of such con struction as to provide a writing shell, and lor the purpose ol securing a desirable slope in the writing shell without unduly increasing the thickness ol the door, the upper lorward edge ol the box body may be truncated as shown at 2 in the figures. The ringer I mount within the space contained between the back surface ol the writing shell and the plane of the lront edges of the box body; in this mounting no space within the box body is required or reserved for the ringer or for any portion thereof, and a further advantage is gained in that when the door is open at ninety degrees, as in Fig. 2, the ringer does not project in lront of the box body to interfere, with the hand of a workman engaged upon the box body or contents whereby the workman might be handicapped or the ringer injured. The writing shell is made of maximum size, substantially occupying the entire front of the door. The transmitter I mount upon the side of the box body, by which expedient I do not sacrifice any writing-shell space nor am I obliged to extend the backboard ol the box to provide space for the transmitter, while at the same t1me a rigid mount for the transmitter admitting of rigid wiring of the local circuit is obtained, and the transmitter itself occupies a space immediately above the switchhook and thus does not occupy space either on the wall or in a packing box in excess o'l' that required by the substation set with the usual projecting switchlmok.

In the drawings, lf 'gure 1 shows an isometric perspective ol re device, and Fig. 2 shows lront elevation with the door of the devi open. at an angle 01' ninety (90) degrees, the door being shown in section to rcveal the contained ringer in elevation.

Upon the backboard 1 the box 2 is permanently mounted, the plane door 3 being hinged thereto. carries an in The door 0 clined shell l with rib l", the plane door and the writing shell being united by side braces 5 and bottom brace 6. The plane door is cut away between the side braces above the bottom brace to give access to the ringer 7 which is mounted upon the bottom brace in such manner that it lies wholly within the space in lront ol' the plane of the back surlacc ol the plane door.

The box body has a shell 8 supporting the batteries 9. The space above and below the shell 8 is available lor generator hook switch and induction coil. Transmitter 10 is mounted upon the side ol the box body at the lelt and near the top, the bracket used being an ordinary transn'iitter arm 11 mounted upon a plate 12 so that the plane ol the base of the plate 1'. is parallel to the plane ol movement ol the extending arm 11. This location ol the transmitter support upon the side ol the box gives a minimum length ol primary circuit wiring to include the hook switch, induction coil 13, the batteries 9-9 and transmitter 10 without requiring an extended backboard .lor the transmitter and without restricting the size of the writing shell. Furthermore, by this position of the transmitter at the side ol the cabinet the writing shell lies relatively to the right ol the transmitter where it is more convenient to the right hand 01' a telephonepatron.

Hereto'lore two methods or" mounting the transmitter on a telephone wall set have been known, viz., to mount the transmitter upon a long arm attached to a plate upon the backboard, the long arm bringing the transmitter lorward beyond the cabinet of the set; and second, to mount the transmitter upon a plate by means of a knuckle joint or hinge, the plate being mounted upon the lace ol the cabinet ol the set. The first method gave a very desirable range ol vertical adjustment to the transmitter by swinging it vertically on a hinge at the base of the arm, whereby the transmitter might be brought to a height suitable for convenience of difson of the lack of adjustment in the transmitter, as a very slight movement vertically varies the plane of the diaphragm accordingly. heretofore it has been necessary to provide additional backboard space for the transmitter in order to obtain the desirable feature 'of vertical transmitter adjustment as it has been accepted as objectionable to mount the long-arm transmitter upon the face of the cabinet, thus causing it to project into the room to an undesirable extent.

My design of cabinet and side-arm transmitter support secure the advantages of a long-arm transmitter having a maximum vertical adjustment, economizing backboard space and therefore wall space, leaving the face of the cabinet free for writin shelf and being at the same time within the usual limits of projection from the wall into the room. A further advantage has been mentioned in the feature of throwing the transmitter to the left of the wr'ting shelf rather than above it.

Above the induction coil 13 I install a terminal clip 1% to which I attach the secondary winding of the induction coil. T he object of this additional terminal clip is to provide convenience for condenser connections in case it is desired to include a condenser in series with the secondary winding, of the induction coil.

By the inclusion of the ringer wholly Within the cubic contents of the combined door and writing shelf, it is not required to provide space for the ringer within the body of the cabinet, and a reduction in the size of the cabinet body thus is obtained.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

In a substation telephoneset, a cabinet box; a backboard therefor slightly larger than the back area of said box; a front therefor and comprising a writing shelf; line binding posts on said backboard; a trans-' nutter bracket mounted upon the side of a said box and comprising a base and an arm, said arm projecting from said base in a plane parallel to the mounting face of said base and being pivotally adjustable by movement in said plane whereby a supported transmitter may be raised or lowered; a complete talking circuit completely wired and composed wholly by apparatus elements and connecting wiring contained wholly within or supported directly by the rigid portion of said box; and a ringer carried by said door and located under the writing shelf, substantially as described.

Signed by me at Sioux City, county of Woodbury and State of Iowa in the presence of two witnesses.

RASMUS HANSEN.

Witnesses CONSTANT B. MARKs, PEARL M. A. HOFFMAN. 

